Loudspeaker



FIG. 1 is a front perspective view of a loudspeaker showing my new design;

FIG. 2 is a rear perspective view of a loudspeaker;

FIG. 3 is a rear elevational view of a loudspeaker;

FIG. 4 is a side elevational view of a loudspeaker; and

FIG. 5 is a front elevational view of a loudspeaker. 

The ornamental design for a loudspeaker, as shown. 